Difference between revisions of "Using C libraries for a D program"

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(use correct binding extension)
(changed binding file suffix back to .d after seeing the dub repository)
Line 10: Line 10:
  
 
* a D language binding interface file to the C library API headers:
 
* a D language binding interface file to the C library API headers:
::'''/usr/local/include/bu.di'''
+
::'''/usr/local/include/bu.d'''
  
 
We first create a GNU Makefile to build program '''test-bu''' using those three files (note the leading spaces on lines following targets must be tabs in a real GNU Makefile):
 
We first create a GNU Makefile to build program '''test-bu''' using those three files (note the leading spaces on lines following targets must be tabs in a real GNU Makefile):
Line 21: Line 21:
 
MODDIR = /usr/local/brlcad/include
 
MODDIR = /usr/local/brlcad/include
  
BINDING = $(MODDIR)/bu.di
+
BINDING = $(MODDIR)/bu.d
  
 
PROG = test-bu
 
PROG = test-bu

Revision as of 18:54, 16 May 2014

WARNING: This crude recipe by an absolute D newbie has not yet been tested--corrections are welcome!

Assume one has the following, error-free files:

  • a D language source program:
./main.d
  • a C ABI shared library file:
/usr/local/lib/libbu.so
  • a D language binding interface file to the C library API headers:
/usr/local/include/bu.d

We first create a GNU Makefile to build program test-bu using those three files (note the leading spaces on lines following targets must be tabs in a real GNU Makefile):

$ cat Makefile
# use the dmd compiler
DMD = /usr/bin/dmd

LIBDIR = /usr/local/brlcad/lib
MODDIR = /usr/local/brlcad/include

BINDING = $(MODDIR)/bu.d

PROG = test-bu

all: $(PROG)

$(PROG): main.o bu.o
        $(DMD) -o $@ main.o bu.o -L$(LIBDIR) -lbu
 
%.o: %.d
        $(DMD) -c $< -o $@

bu.o: $(BINDING)
        $(DMD) -c $< -o $@

clean:
        -rm $(PROG) *.o

Then we can build test-bu by executing:

$ make test-bu

The GNU Makefile can be made more general and efficient, but it should produce the desired binary program.

Note also that a fully D-supporting C library installation would probably have the D binding interface available as a pre-compiled *.o file.